Question

Решите уравнение х(х2+2х=1)=2(х+1) .

Answer 1

$x(x+1) ^{2} = 2(x+1)$
$\frac{x(x+1)^{2} }{x+1}=2$
$x^{2} +x-2=0$
$x _{1}+ x_{2}=-1$
$x_{2} * x_{1} =-2$
$x_{1} =-2$
$x_{2} =1$